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This is meant to mirror HTTP headers as much as possible for interop not only between our clients but HTTP clients in general. I actually used the http.Header directly, so we get canonical names, etc. I thought about adding in a way to add the data field to a message such that you could detect mime-type and content-length etc. But Go's builtin type detection is not that good, so stuck with basics. Signed-off-by: Derek Collison <derek@nats.io>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,12 @@ | ||
| module github.com/nats-io/nats.go | ||
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| go 1.14 | ||
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| require ( | ||
| github.com/golang/protobuf v1.4.0 | ||
| github.com/nats-io/jwt v0.3.2 | ||
| github.com/nats-io/nats-server/v2 v2.1.6 | ||
| github.com/nats-io/nkeys v0.1.4 | ||
| github.com/nats-io/nuid v1.0.1 | ||
| google.golang.org/protobuf v1.21.0 | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| // Copyright 2020 The NATS Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package test | ||
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| import ( | ||
| "reflect" | ||
| "testing" | ||
| "time" | ||
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| "github.com/nats-io/nats.go" | ||
| ) | ||
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| func TestBasicHeaders(t *testing.T) { | ||
| s := RunServerOnPort(-1) | ||
| defer s.Shutdown() | ||
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| nc, err := nats.Connect(s.ClientURL()) | ||
| if err != nil { | ||
| t.Fatalf("Error connecting to server: %v", err) | ||
| } | ||
| defer nc.Close() | ||
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| subject := "headers.test" | ||
| sub, err := nc.SubscribeSync(subject) | ||
| if err != nil { | ||
| t.Fatalf("Could not subscribe to %q: %v", subject, err) | ||
| } | ||
| defer sub.Unsubscribe() | ||
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| m := nats.NewMsg(subject) | ||
| m.Header.Add("Accept-Encoding", "json") | ||
| m.Header.Add("Authorization", "s3cr3t") | ||
| m.Data = []byte("Hello Headers!") | ||
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| nc.PublishMsg(m) | ||
| msg, _ := sub.NextMsg(time.Second) | ||
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| // Blank out the sub since its not present in the original. | ||
| msg.Sub = nil | ||
| if !reflect.DeepEqual(m, msg) { | ||
| t.Fatalf("Messages did not match! \n%+v\n%+v\n", m, msg) | ||
| } | ||
| } | ||
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| // Make sure we do the right thing with a badly encoded header msg. | ||
| func TestBadHeaderMsg(t *testing.T) { | ||
| s := RunServerOnPort(-1) | ||
| defer s.Shutdown() | ||
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| ech := make(chan error) | ||
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| nc, err := nats.Connect(s.ClientURL(), nats.ErrorHandler(func(_ *nats.Conn, _ *nats.Subscription, err error) { | ||
| ech <- err | ||
| })) | ||
| if err != nil { | ||
| t.Fatalf("Error connecting to server: %v", err) | ||
| } | ||
| defer nc.Close() | ||
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| subject := "headers.test" | ||
| sub, err := nc.SubscribeSync(subject) | ||
| if err != nil { | ||
| t.Fatalf("Could not subscribe to %q: %v", subject, err) | ||
| } | ||
| defer sub.Unsubscribe() | ||
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| bad := []byte("⚡NATS⚡/0.1\r\nAccept-Encoding: json\r\nAutho Bad Headers!") | ||
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| nc.Publish(subject, bad) | ||
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| tm := time.NewTimer(5 * time.Second) | ||
| defer tm.Stop() | ||
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| select { | ||
| case err := <-ech: | ||
| if err != nats.ErrBadHeaderMsg { | ||
| t.Fatalf("Did not get the error we wanted, got %v", err) | ||
| } | ||
| case <-tm.C: | ||
| t.Fatalf("Did not receive an error") | ||
| } | ||
| } |